IGCSE Computer Science Paper 1 Word Scramble: 3.3 Data Storage and 3.4 Network Hardware (Modules 325–341)
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Word scramble
Unscramble the letters and write each key term on the line.
1
NITPO ABSCUEE EARSON
A full-mark storage answer uses the correct term (e.g. virtual memory, ROM, SSD) and links each point to a reason with 'because', rather than just naming or listing things.
2
ACM EDRSSDA
A unique hardware address given to one network interface card (NIC). Each NIC has its own, so a device with Wi-Fi and Ethernet has two. It identifies the hardware, not the network.
3
E0:CA:3B:50:D2:14
A MAC address is six pairs of hex digits (two digits per pair, 48 bits in total), separated by colons or hyphens, such as ______.
4
PI EDADSSR OCLOTAINAL
A device is given its IP address by the network it joins, not by the manufacturer, so it can change on a new network. Unlike a MAC address, it is not built into the NIC.
5
VPI4 DERSASD
32 bits written as four denary numbers from 0 to 255 separated by full stops, such as 190.0.5.20. Each number is a group of 8 bits.
6
NIIVALD 4IPV DERSSAD
An address without exactly four groups, or with a group outside 0 to 255. Examples: 256.1.1.1 (too big), 192.168.1 (too few groups), 10.-5.2.1 (negative) and 10.a.2.1 (letter).
Answer Key
IGCSE Computer Science Paper 1 · Modules 325–341
1NITPO ABSCUEE EARSON → point because reason — A full-mark storage answer uses the correct term (e.g. virtual memory, ROM, SSD) and links each point to a reason with 'because', rather than just naming or listing things.
2ACM EDRSSDA → MAC address — A unique hardware address given to one network interface card (NIC). Each NIC has its own, so a device with Wi-Fi and Ethernet has two. It identifies the hardware, not the network.
3E0:CA:3B:50:D2:14 → 00:1A:2B:3C:4D:5E — A MAC address is six pairs of hex digits (two digits per pair, 48 bits in total), separated by colons or hyphens, such as 00:1A:2B:3C:4D:5E.
4PI EDADSSR OCLOTAINAL → IP address allocation — A device is given its IP address by the network it joins, not by the manufacturer, so it can change on a new network. Unlike a MAC address, it is not built into the NIC.
5VPI4 DERSASD → IPv4 address — 32 bits written as four denary numbers from 0 to 255 separated by full stops, such as 190.0.5.20. Each number is a group of 8 bits.
6NIIVALD 4IPV DERSSAD → invalid IPv4 address — An address without exactly four groups, or with a group outside 0 to 255. Examples: 256.1.1.1 (too big), 192.168.1 (too few groups), 10.-5.2.1 (negative) and 10.a.2.1 (letter).